A society in which parents are not expected to raise their own offspring. As a consequence, few people value, or even acknowledge, parent/child relationships.
In this set up, loyalty to a society or community will probably be stressed over familial ties. The kids might not even know, or care, who their biological parents are. If they do, their relationship is one of polite deference or vague gratitude ("Thanks for making me exist"). There may be surrogates in the form of "foster parents", with parenting duties being delegated to a select group of trained and licensed guardians, but this is usually a creche-like setup where the foster carer has more children to tend to than is realistic. As a result, they don't have much time to give each individual child. It's no surprise then, that these caretakers don't tend to inspire much affection or loyalty (although they're almost certainly closer to the kids than their biological parents). Often, their role is basically to make sure the kid doesn't die while getting them to fend for themselves as much as possible. Alternatively, children may be integrated into a state-based boarded education system. If the civilization also sports a post-scarcity economy, children may be issued rights and independence sooner, and be allowed to determine their own habitats and social destinies.
There's a few ways this scenario can be played. If it's idealistic, and the system turns out well adjusted, independent children, then it's usually seen as a type of Author Appeal. Perhaps the author is suggesting that science, the good of the community and universal kinship should supercede bonds like family.
Occasionally, the author might use this pragmatically. If they have adult characters running around and having adventures, a baby is going to get in the way. So the foster system ensures that the readers know that the character is a mature, responsible adult capable of procreation, but doesn't have to worry where the pram is going to go as they saddle up to defeat The Empire. Often, this character will be a parent when it suits them - they will be present for the child's major life events, revel in their baby's achievements, and acknowledge their relationship, but never actually change a nappy.
On the other end of the scale, this can be a major symptom of the Dystopia - especially if babies are raised from birth by machines, the military, corrupt Government puppets or in a factory-farm type environment. In this case, the decline of blood ties is related to the dehumanisation of the population, and they become little more than machines/weapons of war/brainwashed Mooks.
The Free-Love Future by necessity must have this attitude towards their kids, since any given person may have dozens of half-siblings, some of whom they might never have met, and the concept of marriage and the Nuclear Family is non-existent. Also worth noting is that surrogacy and Has Two Mommies/Daddies situations don't count, since they involve a sense of parental loyalty and being "exclusive" to a family. Families where parents (or children) work away from home and the other parent, or hired help, look after the children don't count either - they still identify as "belonging" to a family.
- In Saint Beast, angels are described as being created through the love of God and have no man-woman distinction so blood relationships are impossible. They all grow up together in what is supposed to be a utopian community. Humans and gods, however, can reproduce normally resulting in the half-human half-angels Kira and Maya, sons of Lucifer, and Luca, Zeus' son.
- In Toward the Terra, the government screens would-be parents and places children with carefully-selected couples to raise, one child per household. How this works out overall is not really shown; in the manga, Jomy's parents are dutiful caretakers but not all that attached to him, while in the anime they might as well have been his biological parents. Either way, children are removed from their parents when they turn fourteen to take an "adulthood exam" that mostly wipes their memories up to that point.
- In The Promised Neverland, the main characters have all been raised with their "siblings" in an orphanage overseen by their kind Mama and know nothing about their real parents. The entire situation is a way to farm humans for demons to eat, so this is a way to depersonalize what's being done. The one exception shown so far is Isabella realizing Ray is actually her son, to her horror.
- In Invincible, Omni-Man tries to treat his sons the same as anyone else, but he's too good of a person to kill Mark when he won't join with him. He does, however, tell his son that his mother is more like a pet than a lover due to how long Viltrumites live.
- In We Are All Pokémon Trainers, the Druddigon of Dragonspiral Tower and Leavanny of Pinwheel Forest raise their hatchlings communally in creches. As a result most of them never know who their parents are.
- This trope comes into play in the Discworld tales of A.A. Pessimal: tales set in the Assassins' Guild School draw on one of the constant themes of British boarding school literature, the underlying trope that when young people are separated from their families for most of the year for up to seven years, the school takes over as surrogate family. Assassin students learn that wherever they came from, the House becomes their primary family and Housemates their effective siblings. In all British boarding schools, this becomes a rich vein for tales to come from, and like families, the House develops its own idiosyncratic history and traditions. And as Assassin teachers know, some of the bitterest and bloodiest arguments happen inside families, therefore access to weapons and poisons is strictly monitored and regulated.
- In Logan's Run, the "Utopian" future presented has everyone raised by surrogate robots until they come of age. A scene shows a room of infants before they're taken off to be raised elsewhere. One of the main characters even becomes severely annoyed that his friend even cares to wonder who his parents were.
- Anne McCaffrey is keen on this trope.
- Damia of the Tower and the Hive series was fostered, sent away by her father when her mother couldn't keep track of her. While this isn't mandatory in this universe, it's certainly not frowned upon.
- The Dragonriders of Pern use it to an even greater degree. F'nor remarks to himself that Manora "was only his mother" and gets annoyed when she expresses any concern or affection for him. Lessa and F'lar foster their son, Felessan (later F'lessan) and, after the young man is seriously injured, Lessa remarks that she was never particularly maternal. Manora reassures her that the work she did as Weyrwoman was more important than looking after her son, especially when the other women of the weyr were happy to do so. The Dragonriders' Free-Love Future is a major contributor to why there are no blood ties (although "Bloodlines" as a whole are considered very important as a mark of pedigree).
- In The Giver, babies are produced by women whose job title was Birthmother (though the matter of how exactly these babies are conceived is never addressed) but raised in 'family units' composed of a man and a woman (matched up by the Elders), and one male and one female child. Given that everybody's sex drive is chemically inhibited (pills for "Stirrings"), it's safe to assume that the kids are fertilized in vitro. Word of God explains that it is artificial insemination, but did not expand further
- The Green Martians in the first Barsoom book have their eggs taken by the elders, who chose the best to live. When they hatch, a randomly selected foster mother teaches the child to speak and a few other skills. John Carter sees this as hideously evil and the cause of much of their coldness. One Green Martian was conceived and reared in secret by her mother and knowing who her father is; she is much kinder than the rest. John Carter eventually reunites long suffering families after he leads the Green Martians in their conquest of the Red Martians.
- Aldous Huxley's novel Brave New World. Babies are cloned, decanted and raised in Hatcheries and Conditioning Centres. Probably an inspiration for the Paranoia example.
- The RainWing tribe in Wings of Fire have their eggs in communal hatcheries, where no one keeps track of which eggs are whose - the eggs aren't even counted. Dragonets are raised and mentored by the entire tribe, a system that actually seems to work rather well, as demonstrated by Tamarin. To avoid inbreeding, RainWings do the "venom test" with any potential mate (both dragons spit venom on the same spot, and if the second dragon's venom cancels out the first's, they're close relatives). However, Glory (who was taken from the tribe before hatching and didn't know anything about RainWing society) is outraged once she finds out that no one even knew, or cared, that she was missing, especially since she and her friends ran away specifically to find their families. (Though she does use the venom test to find two of her relatives: Jambu, her elder brother/half-brother, and Grandeur, her grandmother/great-aunt.)
- Divergent: "Faction before blood" is the motto upheld by Chicago's faction system. Children are raised and live with their parents until the age of 16, when they must choose whether to stay in their old faction or transfer. Choosing to transfer amounts to restarting one's life, as their new faction will be where they live for the rest of their lives (unless they fail the Initiation Test, which results in banishment). Families are granted visitation rights during the period of the Initation Test, but after that, they have to cut ties with their children forever.
- True in large part for the Lilliputians of Gulliver's Travels.
- Isaac Asimov's Robot Novel The Naked Sun. On the planet Solaria, children are raised by robots (overseen by a man or two) and have no contact with their parents. In "Robots of Dawn", the chidren on Aurora are mostly raised by professional educators, and it is highly unusual (though not impossible) for a person to raise or even know his children. One of the main characters tried that and it didn't end well.
- And in Foundation and Earth we see what has become of the Solarians. It's not pleasant. The main characters rescue a Solarian child from being killed because there aren't any recently-dead adults for her to replace. Still, at least Solaria is still inhabited by something close to humans, unlike Aurora and Melpomene. You might even say that the situation on Solaria is now better in some respects, since a person takes care and sees to his own child, instead of a centralized human farm. The Aesop seems to be that short-lived people who rely on manual labour are better than long-lived people who use robots. Which sits rather oddly with R. Daneel Olivaw being (albeit secretly) one of the crucial heroes of the Foundation series.
- Asimov also has a story about a race of Starfish Aliens who are not just detached from their children - they are terribly disturbed by the thought of humans having blood ties. There is one female who knows who her child is, feels attached to him, but never reveals it to anyone, knowing there is a good chance she'll be killed, along with the child.
- Theodora from the Ivory trilogy by Doris Egan was raised in a creche because the Pyrenese aren't into parenting too much.
- Robert A. Heinlein's Hazel blows her stack at the thought of a child being raised outside the family, in a creche, when there is polygamous family where the child could be raised. Possibly justified by the fact that is exactly how she was raised giving her ample grounds to consider it less than ideal. Also the social conditions on Luna seem to have changed considerably in the decades between The Moon Is a Harsh Mistress and The Rolling Stones with a general shift from the exotic polygamous systems (caused by the drastic sexual imbalance) to a more conventional nuclear family.
- More likely caused by the fact that Hazel was introduced in the adult-oriented novel the Moon is a Harsh Mistress, and the Rolling Stones is a young adult novel. Later adult novel the Cat Who Walks Through Walls shows that Luna is still a place where polygamy raises no eyebrows. In fact, Hazel herself is revealed to be the female lead character in the Cat Who Walks Through Walls, and is engaged in a polygamous relationship with the male lead before the book ends. She seems perfectly comfortable with polygamy, even encourages it.
- This appears to be a major political debate in the third part of A Canticle for Leibowitz.
- In the community portrayed in B.F. Skinner's Utopia, Walden Two, the children are raised by communal effort rather than by the parents. Biological parents' relationships with their children more like close friends, or like uncles and grandparents in modern Western society.
- In K-PAX, prot (lower-case on purpose) says that children on his planet are raised by society as a whole, passing from family to family over the course of their childhood.
- An extreme case is seen in The City and the Stars by Arthur C. Clark. In the city, Diaspar, new citizens are fabricated in near adult bodies by the Central Computer and then rather casually nurtured for twenty years by a randomly chosen 'Father' and 'Mother'. The only such 'family' we see is Alvin's and while Eriston and Etania are invariably described as 'kindly nonentities' Alvin clearly has a genuine affection for them and they apparently stand by him even though he's turned their world upside down.
- The Race from Harry Turtledove's World War series work like this as a matter of necessity due to the fact that they have a mating season and lay eggs communally, so that not even the mothers know who their children are. An exception is made for the imperial family, as no females except the emperor's harem are allowed within his presence during the mating season to ensure that all his children can be accounted for (And he is the only one allowed to mate with them, to ensure that they're all his).
- In the titular country of Herland by Charlotte Perkins Gilman, children are raised by select members of the community. Their birth mothers are acknowledged, but aren't expected to have any more impact on their lives than anyone else. This is done with providing an ideal upbringing for the girls in mind; one resident explains that they all believe motherhood, like dentistry, is a job best left to professionals. The (male) narrator is horrified by this attitude, but neither side is explicitly portrayed as being right or wrong.
- The cheela of Robert L. Forward's Dragon's Egg lay eggs, that are left in a clan hatchery to be tended by elderly cheela. They make no effort to keep track of which female lay which egg.
- In M.C.A. Hogarth's Tales of the Jokka Jokka houses are bound by contracts more than blood relation. Breeders are assigned to produce children when they want to increase their numbers and don't wish to buy contracts from other houses, sometimes they hire females from houses that specialize in breeding. The Stone Moon empire takes this a step further by gathering all the females and doling out children to houses that prove their loyalty.
- In Octavia Butler's Patternist 'verse, psychic parents cannot stand their own offspring due to children's uncontrolled mental broadcasts, so all children are raised in boarding schools by specialized psychics. They know who their parents are, but it's not important.
- In Uglies, while children live with their biological parents, around age 12 they are shipped off to boarding schools which fit this trope. They are brainwashed into believing they are ugly in order to prepare them for the Pretty surgery, which makes everyone generically beautiful and also alters their brain to make them Perfect Pacifist People.
- Gammadian society in Halfway Human is organized this way. They pay women to have babies, which are then raised in nurseries. The justification for this is speculated on by the First Contact Team, and they suggest that it could be so that no one will ever find out that they are related to a member of the asexual subclass.
- In The Stars Are Cold Toys, the Geometer society has adopted this rule centuries ago. Parents remain with their children until they're about 4-5 years old, at which point all children are raised by the Mentors. This ensures absolute loyalty to the common good and to the societal ideals. When Nik (suffering from Laser-Guided Amnesia) questions this method of rearing children over keeping them with their parents, his friends look at him like he's insane and wonder why he'd want to go back to the primitive way of doing things, when Mentorship is clearly superior. Of course, the real reason Nik is so against it is because he's really Pyotr Khrumov, turned into a Manchurian Agent with the help of an alien symbiote, sent to assess the Geometers and figure out if it's worth for Earth to ally with them.
- Star Wars Legends: Oost-Ruusan Jedi take their conscripts from the cradle and rear them in creches. They either made Padawan status or are thrown into the Service Corps by their early teens.
- The Peacekeepers in Farscape. Children born into the military (like Aeryn) are trained from infancy to be soldiers and to follow orders without question. Reproduction is assigned and parents have no role in raising their children. Even an attempt to contact one's child is punished severely, as shown with Aeryn's mom.
Aeryn:When you're born into military service the way I was, it's deemed best to not have any ties to anyone but your unit.Bobby: No brothers or sisters? Aunts or uncles?Aeryn: No.Bobby: Didn't you miss that?Aeryn: Only once I was exposed to it.
- In Paranoia, Junior Citizens are perfectly created via the generous wisdom of Friend Computer and raised collectively to the heartfelt benefit of all Alpha Complex. (Translation: They're a bunch of mutants grown in cloning tanks and communally indoctrinated in state-run creches by Teacherbots.)
- The Clans in Battletech use genetic manipulation and Uterine Replicators to breed the most perfect warriors possible, they are then raised in "sibkos" that are not necessarily composed of relatives. It's become so much of a tradition that "freebirth" has become the rudest insult they use. Though Bloodname (surnames that are earned in battle and inherited maternally) houses are still a big part of Clan society.
- The reptilian T'skrang of Earthdawn deposit their eggs in a communal creche, so knowing which hatchlings are your kids would require a lot of bookkeeping. They don't usually bother.
- Warhammer 40,000: Tau pairings are decided by genetic matchups and the child is raised alongside the others of its caste. However, there is no stigma one way or the other, and there are some Tau who take an interest in their progeny's acheivements.
- In Magic: The Gathering', on the Plane of Tarkir, there is the Dromoka clan. All humanoids in the clan are raised communally, with no knowledge of who their parents are. This is likely to prevent ancestor worship, which was a large part of Dromoka's predecessor the Abzan, but the leader of the current clan views as necromancy (since the spirits of the ancestors may be called upon in times of need). Nevertheless, some still practice the old ways in secret.
- In Epyllion, dragons belong to their Clan (of which there are only a handful in the world, so they're too massive to be built around biological ties) and are hatched communally. This works out because dragons are naturally capable of self-defense and their society has no resource shortages to speak of.
- Your villagers under Black & White. Because of game mechanics, there's usually only one or two "breeders" in the village. The game, fortunately, didn't program in the problems with inbreeding.
- The Qunari in the Dragon Age series do not associate mating with love and family as we understand it is a foreign concept. All children born into the Qun are raised by Tamassrans, the ruling female class responsible for the education of every child. When they reach 12 they are assigned their role in life based on the evaluation of their abilities. Breeding is also overseen by the Tamassrans, deciding which individuals mate for purely functional reasons. If two members of the Qun actually mate of their own accord and conceive a child, the parents are sent off for "reeducation" but the child is simply raised like any other. The Qunari waste nothing.
- Greil in Fire Emblem: Path of Radiance holds this view of his mercenaries: "In times like these, it matters not what our blood ties are. We are family. If you don't want to cause your family any grief, then live!" It doesn't stop him from raising Ike and Mist, and bequeathing command of the Greil Mercenaries to Ike, though.
- Taken to its logical conclusion when Ike accidentally employs King Ashnard's biological son in killing his own father.
- The Charr race from Guild Wars and Guild Wars 2 live and breath this trope. Charr cubs only stay with their mothers for a very short period before being given over to Fahrars; educational camps where they will learn how to fight, unify and define their own social structures within their future warband, which are the only family that Charr have. Cubs have an awareness of their parents, but adults have no hand or interest in the training and growth of their offspring. Loyalty to the warband and the High Legion their warband belongs to supersedes any blood tie.
- The Sangheili/Elites of Halo are usually raised by maternal uncles, in order to minimize nepotism.
- The Trolls in Homestuck never meet their parents. Genetic material is collected and grown in the eggs of a giant insect, and once the young Trolls grow out of the larval stage they are selected by a monster that they share the colour of their blood with. This monster becomes their 'Lusus Naturae' and raises them into adulthood. They can try to track down other Trolls that they share genes with by finding who had a matching sign, if they choose.
- The Jakkai from Slightly Damned lay their eggs once every ten years and are all placed in a single nursery. When the eggs hatch they are nursed by the females who had lain the eggs but have no knowledge of which child is theirs, they also receive their last names at birth from the village elders and are named for a unique physical feature or personality (exc-Protagonist Rhea Snaketail was named for her unusually long tail and her friend Ramirez Bloodeyes was named for his red eyes), they get to pick their first name when they're older. note
- Unsounded: Alderode's Platinum caste die at age 30, so they raise their children communally and strongly discourage parents from getting too attached to their own kids.
- In Gargoyles, gargoyle children are raised communally by the adults of their "clan." Although blood ties exist, gargoyles do not distinguish between their own biological offspring and other children of the clan (Although, to avoid inbreeding, they are still able identify close blood relations by scent). The creator has even stated Hudson and Broadway are biologically father and son, but neither knows this or would care if they did. When Elisa notes that Angela is clearly Goliath's daughter, he responds that she belongs to the entire family unit. Angela was raised by humans, however, and adopted many human values, so when she finds out that Goliath and Demona are her genetic parents, she expresses greater emotional attachment to them than to the other members of the former Clan Wyvern. Goliath, trying to resist the corruption of his traditional gargoyle values, intentionally avoids showing too much affection for Angela so that he doesn't appear to be showing favoritism toward his genetic offspring, until it's pointed out that she's the only child on his and Elisa's "world tour", and the youngest member of Clan Manhattan. (Demona, meanwhile, has her own psychotic obsession with Angela that doesn't really mesh well with Human or Gargoyle values.)
- The Air Nomads of Avatar: The Last Airbender apparently raised their children in sex-segregated temples. Aang had a Parental Substitute in Monk Gyatso. This doesn't keep Aang himself from raising his own children, as his wife is from the Water Tribe and there are no other Air Nomads to raise them communally.
- On Invader Zim, Irkens are grown in jars and enter training immediately after "birth." They nevertheless seem to have familial feelings, since Zim considers the "cold, unfeeling robot arm" that activated him as his parent.